Materiapedia is a free encyclopedia of construction materials in Spanish: 100 material specs, 50 head-to-head comparisons, 70 practical guides and 20 calculators (concrete, paint, tiles, insulation…). Verified, jargon-free, nothing for sale.
CalculaFinanzas is a free toolbox of 40+ financial calculators built for Chile (in CLP): net salary, severance, mortgage dividend, compound interest, UF/UTM converters and more. Live UF/UTM/IPC data, no signup, no clutter — clear answers in seconds, plus plain-language guides.
